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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
Where livelihood is in agriculture
purpose of Breeding Soundness Exam (BSE) for males
functions of progestrone
hormones
2. 19-23 (21) days
sow estrus cycle
sertoli cells
4 major reasons for culling dairy cows
mare estrus
3. Help to signal hormone levels which we need both in the brain right next to each other.
estrus
hypothalamus and pituitary gland
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
epididymis: definition - 3 parts - 4 functions
4. What about the sperm for a bull which has been castrated but still has testicles?
growth lost from castration methods (knife & band)
cow gestation
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
growth lost from castration methods (knife & band)
5. Urinary calculi.
van deferens
kidney stones also called ________ ___________ can develop in the sigmoid flexure
dartos muscle
age and castration
6. 147 days
butterfat
sow estrus cycle
Mares
ewe gestation
7. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat
effects of estrogen
ewe estrus
hypothalamus and pituitary gland
Holstein Cow
8. Animals which have only one estrous cycle (ex: dog - fox)
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
monestrous
age and castration
scrotal circumference (BSE)
9. Important 'landmark' during palpation
dartos muscle
ewe estrus cycle
mare's estrous cycle
cervix
10. 10-37 (21) days
mare estrus cycle
dry-off time in dairy cattle
Dairy calves are removed from cow at birth to...
6-8 weeks
11. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.
Sperm growth rate
uterus
Blood
vagina
12. Way to know everything is alright with the breeding male
dry-off time in dairy cattle
~1 month
purpose of Breeding Soundness Exam (BSE) for males
mare's estrous cycle
13. Days which have decreasing daylight hours
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14. 1-3 days
femininity of a heifer
mare ovulation
sow estrus
femininity of a heifer
15. Duct through penis that carries sperm and urine
scrotal circumference (BSE)
reason for seasonal breeding periods
urethra
stag
16. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat
6-8 weeks
functions of progestrone
scrotal circumference (BSE)
effects of BST
17. (male) pushes the testes upward toward the body for warmth or protection
penis and prepuce observation (BSE)
urethra
cow estrus
dartos muscle
18. Birthing process (termination of gestation)
Parturition
kidney stones also called ________ ___________ can develop in the sigmoid flexure
organs used in spermatogenesis
seasonally polyestrous
19. What makes the milk flow through the mammary glands?
Blood
Grading choice
Dairy Cattle Lactation (standard)
Sperm growth rate
20. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
uterus
van deferens
estrus
estrous
21. 30 hours after estrus begins
cow estrus cycle
Blood
rectal palpation (BSE)
cow ovulation
22. 30-38 hours after estrus cycle begins
sow ovulation
Avg. bull specs
4 major reasons for culling dairy cows
cow estrus cycle
23. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING
reason for seasonal breeding periods
pelvis
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
sperm cell
24. Male on one pin and female on other side
libido test (BSE)
penis sizes vs delivering methods
accessory sex glands
testis (gonads)
25. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
pelvis
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
eminal vesicles
Blood
26. Not under a timeline - cow can not be sold as steak
penis proper
Follical Stimulating in females
Grading choice
organs used in spermatogenesis
27. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
eminal vesicles
why does the cow need fat deposits during pregnancy?
retractor muscles
spermatogenesis
28. ~305 days (altough often longer due to breeding difficulties)
retractor muscles
6-8 weeks
Dairy Cattle Lactation (standard)
cow ovulation
29. (LH) stimulates the Leydig cells to produce testosterone
urethra
Lutinizing Hormone in males
polyestrous
mare estrus
30. Luteolysis happens because of the ____________ hormone
monestrous
4 major reasons for culling dairy cows
prostaglandin
Dairy Cattle Lactation (standard)
31. Look for infection - split - and rupture of the penis
penis and prepuce observation (BSE)
Follical Stimulating in females
femininity of a heifer
6-8 weeks
32. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
Follical Stimulating in females
1. more cost effective - 2. powdered milk is in excess production
4 major reasons for culling dairy cows
scrotal circumference (BSE)
33. 10-37 (21) days
mare estrus cycle
Parturition
monestrous
sperm cell
34. Important 'landmark' during palpation
cervix
feeding a high producing dairy cow
sperm cell
cryptorchid
35. Milk is 15% ________ and 85% __________.
semen evaluation (BSE)
dry matter and water
sigmoid flexure
ewe estrus
36. Animals which have only one estrous cycle (ex: dog - fox)
uterus
monestrous
effects of BST
~1 month
37. ~60 days before calving
Grading choice
dry-off time in dairy cattle
polyestrous
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
38. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood
cowper's gland
urethra
age and castration
penis proper
39. Check feet and legs - look for masculine traits in build such as crest and muscling
elastrator
Hard
visual evaluation (BSE)
reasons for castration
40. 2 month growth cycle. stored in the epididymis of the bull
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
Sperm growth rate
Avg. bull specs
penis proper
41. Depository for semen during insemination. where urine leaves the body
sow ovulation
vagina
sow gestation
Size of cow in relation to the amount of milk produced
42. Duct through penis that carries sperm and urine
urethra
cremaster muscle
testosterone
Blood
43. Failure to have one testis (gonad) to descend
dartos muscle
semen evaluation (BSE)
vagina
monorchid
44. 16-20 hours
burdizzo
cow estrus
sow estrus
testosterone
45. Why does estrus happen before ovulation?
dairy cattle pregnancy check
Follical Stimulating in males
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
cow gestation
46. 30 hours after estrus begins
Hormones from both the fetus and the mom.
cow ovulation
ewe estrus cycle
ewe gestation
47. 114 days
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
sow gestation
what has to happen for males for copulation to occur
ewe ovulation
48. Urinary calculi.
cryptorchid
kidney stones also called ________ ___________ can develop in the sigmoid flexure
mare's estrous cycle
Dairy Cattle milking schedule
49. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.
uterus
Brown Swiss Cow
colostrum
growth lost from castration methods (knife & band)
50. 147 days
ewe gestation
effects of estrogen
sow gestation
mare estrus